8 Mar
2011
8 Mar
'11
11:30 a.m.
On Monday (03/07/2011 at 09:31PM +0000), Tony Duell wrote:
Yes. Sorry about that. I figured that out soon after and sent an apology
post for changing the topic. It was not intentional... honest!
No mneed to apologise. I can't see how restoring the RL02 _drive_ is in
any wat off-copic for this list. And it's an intersting (to me at least)
thread.
> What
do you do? I know the stanadard procedure for RK05 packs, but what
> do you dismantle, and how do you clean, the RL's?
Actually, I was asking about cleaning the RL _packs_, but doing the
drives is an interesting subject too. Before I
ever try to spin one up, I take the front panel off and remove
the black pre-filter. It is guaranteed to be disintegrating and turning
into a fine black powder. Exactly the kind of thing you don't want
sucked into the drive.
Ineeed. That crumbing foam is a problem in a lot of old elecrtronics. The
RL is better than some, the pre-filter is at the front end of those 'heat
exchanger' tubes, so the decaying foam isn't plaseted straight onto the
absolute filters as it is in an RK05 or RK07. It still helps to remvoe it Most of the
time when I'm restorign soemthing, not just RLs, I remvoe the
fan unit completely . Most of the time these fans can be taken apart
(fixings are often under the lable), there are many varients which I
won';t go into here (but will if somebody asks me), but basically you get
to the end of th espidnel, remvoe a circlip and washers, and slide the
rotor out. The housing and blades are then a lot easier to clean. and
you can put a drop of oil on the bearings.
Yes... that makes sense and I am likely to go back over the unit and do
that level of tune up after I've determined it's worth investing that I did find a couple sort of close (in size) filters at
one of the DIY
centers here... one was for a stand-alone room air cleaner and one was
for a vacuum cleaner. I took one and peeled off the surrounding frame and
cut it to size with a bread knife... and then glued it into the plastic
frame I had scavanged from one of the real filters with elastomeric caulk.
I haven't tried it in the drive yet. I'm worried that it won't take
the pressure and will just blow right through the thing... so I need
to rig the drive so I can spin it up without a pack in there and have
the front air dam removed so that if it does blow it out, it goes into
the room and not into the drive itself.
IIRC, the blower fan is on the spidnle motor in these drives, so you have
to have the spidnle turning for this. And I think it takes the speed
reference from the sectr notches on the pack, so you cna't have the
driving running at the right speed with no pack in it. Darn.
But you probably can get it so that the motor is running flat out. If the
filter will stand that, it should stnad the lower airflow when the motor
is running at the right speed. I think if I was doing this sort of thing,
I'd make atest board to connect ot the 'AC Servo' PCB (the motor cotnrol
PCB fised to the rear panel) that set the inputs to said board
appropraitely to turn on the motor.
-tony